GPS卫星坐标计算及几何精度因子  

Calculation of GPS Satellite Coordinate and GDOP

作　　者：廖春招 

机构地区：[1]厦门海沧市政建设管理中心,福建厦门361012

出　　处：《矿山测量》2011年第4期29-31,4,共3页Mine Surveying

摘　　要：GPS卫星坐标和星座的几何精度因子对GPS定位精度有着重要影响,文中首先采用广播星历来计算卫星坐标,然后使用等维等距的拉格朗日插值方法对精密星历内插来获取较高精度的卫星坐标,最后分析了几何精度因子的计算过程及其对定位精度的影响,得出了一些有益结论。In this paper,because GPS satellite coordinate and GDOP have a great impact on positioning precision,firstly,the author uses broadcast ephemeris to calculate Satellite coordinates,and then,uses dimensional equidistant Lagrange interpolation method for precise ephemeris interpolation to obtain high precision satellite coordinates,at last,analysis the calculation process of GDOP and the impact on the positioning accuracy,and gets some useful conclusions.

关 键 词：卫星坐标 星历内插 拉格朗日插值 几何精度因子 

分 类 号：P228.4[天文地球—大地测量学与测量工程]